Though the 2024 NBA playoffs saw its share of surprising outcomes, in the end the best team reigned supreme.

And the Boston Celtics left no doubt of their superiority by seizing the franchise's record 18th Larry O'Brien Trophy with one of the most successful post-season stretches of the NBA's modern era, maintaining the level of dominance they displayed while winning a league-best 64 games during the regular season.

Monday's clinical 106-88 victory over the over-matched Dallas Mavericks in Game 5 of the Finals was the fitting conclusion to a stellar play-off run in which the Celtics went 16-3. That winning percentage of .842 is the second-best by an NBA champion since the league moved to a best-of-seven format for all four rounds in 2003, bettered only by the 2017 Golden State Warriors super-team that lost just once during that year's play-offs.

Detractors will be quick to point out Boston's relatively easy path to glory, as they didn't have to face any of the Western Conference's top four seeds in the Finals and also avoided the East's second and third-best teams, the New York Knicks and Milwaukee Bucks, in earlier rounds. 

The numbers suggest it may not have mattered.

Boston finished the regular season with the league's best offensive rating (120.2) and ranked third in defensive rating (109.0), and their 11.2 net rating (the difference between offensive and defensive rating) was the highest by any team since the aforementioned 2016–17 Warriors posted a 12.1 mark en route to capturing their second of three NBA titles within a four-year span.

And the Celtics cruised through the play-offs despite Kristaps Porzingis, one of the team's three 20-point-per-game scorers, missing 12 total games with a leg injury that rendered him to a reduced supporting role for much of the Finals.

So, what were the main factors behind Boston's season-long run of brilliance, one this budding dynasty appears to be fully capable of extending beyond 2024? Here's a closer look:

Three-point markmanship

Head coach Joe Mazzulla's offence is built around the 3-point shot, as the Celtics hoisted up a league-high 3,482 trey attempts during the regular season - 240 more than the next highest team -  and had a staggering 47.1 per cent of their total shots taken from beyond the arc.

If you're taking that many long-distance shots, you better have guys that can make them. And Boston certainly did.

The 2023-24 Celtics became the first team in NBA history with seven players that shot 37 per cent or better from beyond the 3-point line while having 250 or more attempts in a season, and their overall 3-point percentage of .388 ranked second in the league behind only Western Conference regular-season champion Oklahoma City's .389.

And when Boston was hitting its threes, it was virtually unbeatable. The Celtics were 36-1 in the regular season when shooting over 40 per cent from 3-point range, and 8-0 in the post-season when that number was higher than 37.5 per cent.

Disruptive defence

The Celtics also had the NBA's best net rating in 2022-23, a season which memorably ended with a stunning seven-game loss to the eighth-seeded Miami Heat in the Eastern Conference finals. Miami pulled off the upset by beating Boston at its own game, as it shot a scorching 43.4 per cent from 3-point range for the series while the Celtics struggled to a 30.3 per cent success rate.

Dallas, which had the second-highest rate of 3-point shots attempted per total field goal attempts during the regular season at 44.1 per cent, was determined to follow the Heat's blueprint in the Finals, but this Celtics team would have none of it.

The Mavericks made good on over 40 per cent of their shots from beyond the arc in their Game 4 blowout win, but were held under 30 per cent in three of their losses and under 32 per cent overall for the series as Boston's perimeter disruptors - led by six-time All-Defensive Team member Jrue Holiday and Finals MVP Jaylen Brown - put the clamps on Dallas' sensational backcourt duo of Luka Dončić and Kyrie Irving.

Doncic made just 11 of 45 (24.4 per cent) of his 3-point tries for the series, and the ex-Celtic Irving wasn't much better at 27.6 per cent. The Mavericks shot 29.7 per cent as a team from long distance when Holiday was on the court and 29.9 per cent when Brown was in the game.

Dynamic depth

Boston was able to navigate Porzingis' lengthy absence, as well as the shooting struggles of top scorer Jayson Tatum for sizeable portions of the Finals, with relative ease due to strong contribtions from a few of its role players, most notably Al Horford and Sam Hauser.

The 38-year-old Horford stepped into a starting role with Porzingis either unavailable or limited for much of the post-season and handled it with aplomb, especially on the defensive end where the Celtics were a stingier outfit with the grizzled veteran on the court.

Hauser, an undrafted 3-point specialist whose role off the bench steadily increased during the season, made his presence felt as well by going 11 of 23 (47.8 per cent) from beyond the arc for the Dallas series. The Celtics were a plus-17 with him on the court over the five games.

A dynasty brewing?

Under a steady sequence of shrewd moves from former coach turned president of basketball operations Brad Stevens and predecessor Danny Ainge, the Celtics have assembled the NBA's most complete roster and one that has the capability of potentially wreaking havoc for years to come. With Horford hinting at his intentions to return for an 18th NBA season, Boston will have all of its main players back for next season with its core of Tatum, Brown and Porzingis still in their primes. 

Add in a coach in Mazzulla who's still not 36 years old with still room to further perfect his craft, and it's not hard to envision yet another banner or two hanging from the rafters of TD Garden in the near future.

Kyrie Irving is confident the Dallas Mavericks can be regular championship contenders after their NBA Finals loss to the Boston Celtics came as a "bitter" ending to a "really positive journey".

Jayson Tatum delivered a magnificent performance in Game 5 with 31 points, eight rebounds and 11 assists, as the Celtics capped a dominant season by cruising to a 106-88 victory over the Mavericks on Monday to capture their first league championship since 2008.

It was a difficult night for Irving at TD Garden. Boston's All-Star forward and Finals MVP Jaylen Brown compiled 21 points, eight rebounds and six assists and played lock-down defence on the Mavericks star, who was held to under 39 per cent shooting in three of Dallas' four losses.

Irving, who spent two seasons with Boston before signing with the Brooklyn Nets in 2019, went just 5 of 16 from the field while managing 15 points, the third time in the series he produced 16 points or fewer.

But Irving was looking at the positives despite the 4-1 series loss and hopes Dallas will be back to go one better in the years ahead.

"We answered a lot of questions this year on what we were capable of doing and now it is just about being consistent," Irving said, per ESPN.

"I said that I wanted to be remembered as one of the best teams of this era and our last few champions have been a new one each and every year.

"So, I see an opportunity for us to really build our future in a positive manner where this is almost like a regular thing for us, and we are competing for championships. 

"From a spiritual standpoint, I think I enjoyed this journey more than any other season, just because of the redemption arc and being able to learn as much as I did about myself and my teammates and the organization and the people that I'm around."

After Dallas substituted its starters in the closing stages, Irving and Doncic exchanged an embrace and a few words on the sideline as the final seconds of the Celtics' victory ticked away.

"We said, 'We'll fight together next season, and we are just going to believe'," revealed Doncic.

Doncic battled injuries during the postseason and it remains uncertain if he will be able to represent Slovenia at the Olympic Games.

"I don't want to talk about what's next, man," Doncic said. "I have some decisions to make. I'm just trying to get a little bit healthier.

"It doesn't matter if I was hurt, how much was I hurt. I was out there. I tried to play but I didn't do enough."

With Doncic on the team, Mavericks coach Jason Kidd is optimistic there will be more NBA Finals appearances to come for Dallas.

He said: "For [Doncic] at the age of 25 to get to the Finals, to be playing his basketball at the level that he's playing...

"Now it's just being consistent. When you have one of the best players in the world, you should be always fighting for a championship."

Jayson Tatum delivered a magnificent performance in Game 5 of the NBA Finals with 31 points, eight rebounds and 11 assists, and the Boston Celtics capped a dominant season by cruising to a 106-88 victory over the Dallas Mavericks on Monday to capture their first league championship since 2008.

Returning home off a 38-point Game 4 loss that extended the series, the Celtics bounced back with authority by leading the clincher from start-to-finish to put the finishing touches on an unquestionably title-worthy 2023-24 campaign.

After recording the league's best regular-season record at 64-18, Boston went 16-3 in the post-season to earn the 18th NBA title in franchise history, breaking a tie with the Lakers for the most by any team.

Jaylen Brown compiled 21 points, eight rebounds and six assists in Game 5 and was named Finals MVP. The All-Star forward averaged 20.8 points, 5.4 rebounds and five assists per game for the series in addition to playing lock-down defence on Mavericks star Kyrie Irving, who was held under 39 per cent shooting in three of Dallas' four losses.

The Boston Celtics must "reassemble" after missing the chance to clinch the NBA Championship on Friday, says Jaylen Brown.

The Celtics headed into Game 4 on the road at the Dallas Mavericks looking to complete the sweep and seal their first title since 2008.

However, they were outplayed by their hosts, slumping to a 122-84 blowout loss to end their 10-match playoff winning run and leave them with work to do if they are to get over the finishing line.

The Celtics now head home with the opportunity to get the job done on Monday, and Brown has called upon his team-mates to bounce back from Friday's 38-point defeat.

"These are the moments that can make you or break you," Brown told reporters.

"We have to reassemble. We have to look at it and learn from it, and then we've got to embrace it and attack it.

"It's going to be hard to do what we're trying to do. We didn't expect anything to be easy, but it's no reason to lose our head."

Dallas dominated from start to finish in Game 3, holding an 11-point lead just nine minutes into the contest and never looking back as they stamped out any hopes of a Boston comeback.

Brown praised the Mavericks for their response to losing the first three games of the series, saying: "Give credit to Dallas.

"I think they played hard physically, and then they dominated the glass. I think that was the key that put a lot of pressure on us.

"And then we didn't make shots tonight, and I think that's where, you know, we allowed them to play free, once we get them multiple opportunities to make shots, and then also we didn't hit shots on the other end.

"We're going to look at the film and see where we can get better, and then go from there."

Jaylen Brown said the Boston Celtics had learned from past mistakes after they took another step towards clinching the NBA championship with Wednesday's Game 3 victory over the Dallas Mavericks.

Brown had 30 points, eight rebounds and eight assists as the Celtics took a 3-0 lead in the series, holding off a late Dallas push to claim a 106-99 win.

They could now capture a record-breaking 18th NBA crown on Friday, when they are again on the road for Game 4 at American Airlines Center.

The Celtics were beaten NBA finalists against the Golden State Warriors two years ago and have also lost two Eastern Conference finals series in the last five seasons.

Brown thinks experiencing those near misses has made them stronger, saying: "Experience is the best teacher. 

"All year long we've been hearing about the Celtics in the past, for the last six to eight months, all we've been hearing is all the different shortcomings we've had in the past.

"This is a new team, you know what I mean? We've learned from those experiences. In these moments, you can see that we learned from it. We stepped up to the plate, and we found a way to win."

None of the previous 156 teams to face a 3-0 deficit have rallied to win an NBA playoff series, in any round.

Dallas gave themselves a chance of making a series of it when a 22-2 spurt pulled them within one point with three minutes and 37 seconds left.

However, a Brown putback was followed by a Derrick White 3-pointer and a Tatum dunk as the Celtics rediscovered their composure to pull clear once more.

Tatum is refusing to take his eye off the ball despite Boston now having four chances to clinch the title, saying: "Last year, when we were down 0-3 in the conference finals, we really felt like we were going to come back.

"We almost did. You know, we were my sprained ankle away from having a real shot, so we are not relaxing or anything like that. 

"You know, we're not even focusing on winning or Friday or whatever. However long it takes, that's our motto. That's what it's going to take, and nobody is trying to relax at all."

Jaylen Brown hailed Kristaps Porzingis after the Boston Celtics power forward returned from injury with a "monster game" against the Dallas Mavericks.

Porzingis, who has been absent for five weeks with a calf strain, played a starring role from the bench against his former side, as the Celtics drew first blood in the NBA Finals with a 107-89 win in Game 1.

Having not played since Game 4 in the first round against the Miami Heat, the Latvian marked his return with 20 points, six rebounds and three blocks at TD Garden.

And Brown, who top-scored for the Celtics with 22 points, paid tribute to his team-mate.

"Kristaps had a monster game for us," he said. "Just his presence shooting the ball and then him being able to attack those switches and mismatches, he made them pay every time, and that's what we need going forward in the series."

Porzingis was understandably thrilled to make up for lost time with his inspired display for top seeds Boston, who are targeting a record-breaking 18th NBA title this year.

"The adrenaline was just pumping through my veins," he said. "Obviously, it wasn't ideal that I was out for such a long time.

"But, I did everything I could to prepare mentally for this moment coming back, and it paid off, and we got the job done tonight and had a good game, and happy about the result.

"Tonight was an affirmation to myself that I'm pretty good, you know? Maybe I'm not perfect, but I'm pretty good and I can play like this and I can definitely add to this team."

The Boston Celtics return to the NBA Finals as a different team to that beaten by the Golden State Warriors two years ago, says their Eastern Conference finals hero Jaylen Brown.

Brown won the Larry Bird Trophy as Eastern Conference finals MVP on Monday, having helped the top-seeded Celtics complete a 4-0 series sweep of the Indiana Pacers.

In Game 4, Brown sank 10 of his 29 points in the fourth quarter as the Celtics recovered from a nine-point deficit with under nine minutes left for a 105-102 victory.

The Celtics have reached the Eastern Conference finals six times in the last eight years but this is just the second time they have progressed to the NBA Finals in that run. They last did so in 2021-22, only to be beaten 4-2 by the Warriors.

Brown believes they have become a better team for that experience, however.

"We feel like we're a different team than we were last year and the year before that," Brown said. 

"I know everybody wants to continue to pigeonhole us with what was happening in the past but we've had a different team every single year, different coaches, we've had like three coaches in the last five years. 

"Still people want to make it seem like it's the same, it's the same, it's the same.

"Time has gone by, experience has been gained and I think we are ready to put our best foot forward."

Jayson Tatum supported Brown with 26 points, 13 rebounds and eight assists on Monday, while Jrue Holiday had 17 points and Derrick White tacked on 16.

"It's special," Tatum said. "Even though we've been there before, most of us have, you don't take it for granted. We were excited.

"It was a hell of a team we just played, they made us earn every single game and we're extremely grateful to move on to the Finals."

Derrick White's tie-breaking 3-pointer with 45 seconds left sent the Boston Celtics into the NBA Finals for the second time in three years with a 105-102 win over the Indiana Pacers in Monday's Game 4 of the Eastern Conference finals.

The top-seeded Celtics, who were ousted in seven games by the Miami Heat in last year's East finals, completed a sweep of this best-of-seven series by rallying from a nine-point deficit with under nine minutes left.

Jaylen Brown led Boston's comeback by scoring 10 of his 29 points in the fourth quarter and coming up with a key late block that preceded White's winning shot. The Celtics also received 26 points, 13 rebounds and eight assists from Jayson Tatum, as well as another strong performance from their backcourt duo of White and Jrue Holiday.

Holiday totalled 17 points and nine rebounds while White had 16 points on 7-of-14 shooting along with a game-high five steals.

The sixth-seeded Pacers were unable to extend the series while playing a second straight game without All-Star guard Tyrese Haliburton, who injured his hamstring in Thursday's Game 2.

Andrew Nembhard led Indiana with 24 points and 10 assists, while Pascal Siakam posted 19 points and 10 rebounds.

The Celtics will face the winner of the Western Conference finals between the Dallas Mavericks and Minnesota Timberwolves, and will host Game 1 on Thursday, June 6. The Mavericks lead that series 3-0 and can advance at home in Tuesday's Game 4. 

A tightly contested game saw neither side lead by more than eight points until the Pacers put forth a 5-0 run, capped by Nembhard's 3-point play with 8:57 left to play, to take a 94-85 advantage.

Indiana led 98-90 with under six minutes to go before the Celtics began catching fire. After Brown hit two free throws and Tatum knocked down a 3-pointer, Holiday drove the lane and was fouled while getting a layup to go down following a made basket by Nembhard. Boston's veteran guard calmly hit the ensuing free throw to bring the Celtics within 100-98 with 3:54 left.

It remained a two-point game until Brown knocked down a floater with 2:40 left to tie the score at 102-102. Shortly thereafter, the All-Star forward rejected Nembhard in the lane as Boston's Al Horford grabbed the rebound with the contest headed towards the final minute of play.

Brown then found an open White in the right corner, and the valued guard drained a 23-footer to send the Celtics ahead.

Indiana had one final chance to force overtime, but Nembhard's 3-point try missed the mark and the Pacers failed to get another shot off. 

Jaylen Brown hailed the Boston Celtics' never-say-die attitude after his last-gasp 3-pointer teed up their overtime win in Game 1 of the Eastern Conference finals.

The Indiana Pacers were just 6.1 seconds away from a 117-114 road win in the opening game of the series on Tuesday, only for Brown to sink a 3 over Pascal Siakam from the corner to level things up.

Two Tyrese Haliburton free throws put the Pacers back in front in overtime, but Jayson Tatum scored 10 of his game-high 36 points in the additional period as Boston triumphed 133-128.

Jrue Holiday supported Tatum with 28 points, while Brown added 26. All three players finished with three steals apiece as Indiana committed 21 turnovers.

Speaking after the dramatic finale, Brown said: "Welcome to the NBA playoffs! You've just got to manage your emotions. Anything can happen. 

"It's not over until the final buzzer sounds. It's not over until it’s over. We found a way to win the game at the very end."

Holiday echoed those sentiments, adding: "We've seen crazy stuff happen all the time. 

"We don't think we've lost a game until we've actually lost the game. That's part of the reason why we were so resilient towards the end.

"A couple of turnovers, a great shot, a great look by JB, or at the other end if we make a couple other shots that were wide open it could be a completely different game. 

"We're just the type of team that's going to keep on fighting no matter how long and no matter what it takes."

The Celtics host Game 2 on Thursday as they target a first NBA Finals appearance since 2021-22, when they were runners-up to the Golden State Warriors.

Asked how Boston will approach Game 2, Tatum said: "Don't relax, it'll be different circumstances. The first two rounds we won our Game 1 by a wide margin, so maybe human nature played into that. 

"But tonight being a close game, going into overtime, we certainly felt like we should have won and we could have played better."

Jayson Tatum scored 10 of his 36 points in overtime and the Boston Celtics capitalised on some sloppy play by the Indiana Pacers for a 133-128 victory in Game 1 of the Eastern Conference finals on Tuesday night.

Jrue Holiday had 28 points and Jaylen Brown added 26, none bigger than his tying 3-pointer with 6.1 seconds left in regulation.

The Celtics finished with 11 steals - three each by Brown, Tatum and Holiday. They became the first team in NBA playoff history to have three players record 25 points and three steals in a game. 

Game 2 is Thursday night in Boston.

Tyrese Haliburton had 25 points and 10 assists for the Pacers, who scored 56 points in the paint against a Celtics team missing injured 7-footer Kristaps Porziņģis. The Pacers, though, committed 21 turnovers.

Indiana twice turned the ball over with a three-point lead in the final 30 seconds of regulation. Brown’s 3 from the corner with Pascal Siakam in his face tied it at 117.

Tyrese Haliburton sank three free throws after he was fouled with 1:46 to go in overtime to put the Pacers ahead 123-121, but Tatum completed a three-point play 34 seconds later to give Boston the lead for good.

Tatum’s 3 following another Indiana turnover with 43 seconds left extended the lead, and he hit two free throws with nine seconds left to seal the win.

Jayson Tatum credited the Cleveland Cavaliers for the fight they showed in Donovan Mitchell's absence after helping the Boston Celtics take a 3-1 lead in the teams' Eastern Conference semifinal series. 

Tatum had 33 points and 11 rebounds as the Celtics moved within a game of reaching the conference finals for a third straight year with Monday's 109-102 road win.

Cleveland, who were already without starting center Jarrett Allen due to a rib contusion, were also deprived of their leading scorer after Mitchell suffered a calf strain in Game 3.

However, the Cavs stayed in the game until Jaylen Brown sank a clutch 3-pointer with 69 seconds to go in the fourth quarter, with Derrick White and Tatum then making a couple of free throws each to add some gloss to the scoreline.

Darius Garland had 30 points and seven assists for the Cavs while Caris LeVert had 19 points, leaving Tatum impressed. 

"It's to be expected, right? When the best player goes out, everybody has more freedom, more opportunity," Tatum said of Boston's opponents.

"Obviously, we knew it wasn't going to be easy. It's the playoffs, they don't want to go home. 

"Give them credit, they played hard from beginning to end and made big plays on both ends. They hit big shots, so it was a battle, and it was fun out there."

Cavs coach J.B. Bickerstaff also heaped praise on his players, saying: "I mean, they laid it all out there. They gave us everything that they had. 

"They competed at a high level. They played the game properly. I'm proud of the guys, the way they went out and scrapped and competed and gave ourselves a chance."

Boston now have a chance to wrap up the series in Game 5 at TD Garden on Wednesday, an opportunity Brown is keen to ensure they take.

"There's nothing better than winning a playoff game on the road," Brown said. "It's like everybody's against you guys. It's a tough environment, the crowd was great, but as a competitor, it's really fun to be in an environment like that, to win on the road.

"Now it's time to go back and play well in front of our fans and give them something to cheer for and try to get a win."

Shai GIlgeous-Alexander scored 22 of his 34 points in the second half to rally the Oklahoma City Thunder from a 14-point deficit and earn a crucial 100-96 victory over the Dallas Mavericks in Monday's Game 4 of a Western Conference semifinal series.

Chet Holmgren had 11 of his 18 points after half-time and added nine rebounds to help the top-seeded Thunder even the best-of-seven series at 2-2 as it heads back to Oklahoma City for Wednesday's all-important Game 5.

The fifth-seeded Mavericks squandered an opportunity to put the Thunder on the brink of elimination despite setting a franchise play-off record with 13 blocks, including four each from Derrick Jones Jr. and rookie Dereck Lively II.

Jones finished with 17 points in the loss, while Luka Dončić registered a triple-double for Dallas with 18 points, 12 rebounds and 10 assists. 

The Mavericks led the majority of the game and owned an 86-80 advantage just past the midway point of the fourth quarter before Oklahoma City began its late surge. The Thunder seized momentum with a 12-2 run, capped by consecutive 3-pointers from Holmgren and Luguentz Dort, to go up 92-88 with 2:14 remaining.

Dallas answered on Tim Hardaway Jr.'s 3-pointer on the ensuing possession, but back-to-back baskets by the Thunder's Jalen Williams gave Oklahoma City a 96-91 lead entering the final minute.

The Mavericks again responded and had a chance to tie it when Doncic was fouled with 10.1 seconds left with Dallas trailing 96-94. The MVP finalist made just one of his two shots, however, and the Thunder sealed the outcome by going 4 for 4 from the foul line in the waning moments.

Free throw shooting played a part in the result, as Oklahoma City finished 23 of 24 from the line compared to 12 of 23 for Dallas.

The Mavericks held a 54-43 lead at half-time after limiting the Thunder to under 35 per cent shooting for the first two quarters, and stretched the margin to 14 when P.J. Washington hit a 3-pointer to begin the third.

Oklahoma City closed the gap before the end of the period, though, as it ended the third quarter on a 9-2 run to pull within 69-65 entering the fourth.

Celtics handle injury-plagued Cavaliers to take 3-1 lead

In the East, the top-seeded Boston Celtics moved within a game of reaching the conference finals for a third straight year after posting a 109-102 Game 4 win over the shorthanded Cleveland Cavaliers behind Jayson Tatum's 33 points and 11 rebounds. 

Jaylen Brown added 27 points to help Boston take a 3-1 series lead over a fourth-seeded Cavaliers team playing without leading scorer Donovan Mitchell. The All-Star guard was unavailable due to a strained left calf he sustained in Cleveland's 106-93 loss in Saturday's Game 3.

The Cavaliers also remained without starting center Jarrett Allen, who hasn't played since Game 4 of their opening-round series against Orlando due to a rib contusion.

Darius Garland kept Cleveland competitive by producing 30 points and seven assists, while Caris LeVert had 19 points starting in place of Mitchell.

Boston can close out the series at home in Wednesday's Game 5.

Tatum set the tone right from the outset, scoring 16 points on 6-of-9 shooting in the first quarter to stake the Celtics to a 37-30 lead after one period.

The All-Star forward closed out the first half with a 3-pointer that sent Boston into the break with a 62-57 advantage, though Cleveland opened the third quarter on an 8-2 run to move ahead by a 65–64 score three minutes into the second half.

Boston re-asserted control from there, however, as it outscored the Cavs by a 14-4 margin over the next 4 1/2 minutes. Brown had seven points during the spurt, which Derrick White capped with a 3-pointer for a 78-69 Celtics' lead with 4:50 left in the third quarter.

The Celtics stretched the lead to 98-83 with under eight minutes left, though Cleveland kept battling and put together a 12-2 run to close the gap to 100-95 with three minutes left to play.

Brown hit a clutch 3-pointer with 1:09 to go, however, to put Boston up 105-97, and the Celtics kept Cleveland at bay the rest of the way as White and Tatum each made two free throws in the closing stages.

Jaylen Brown praised the Boston Celtics for proving to themselves they are "not here to play around" in their 106-93 victory over the Cleveland Cavaliers in Game 3.

The Celtics' win on Saturday edged them into a 2-1 lead in the Eastern Conference semifinals after losing Game 2 with a defensive performance Brown described as "unacceptable".

At Cleveland, they bounced back - Jayson Tatum had 33 points and 12 rebounds, while Brown added 28 points as the Celtics avoided a second consecutive defeat.

"I think we just need everybody to be on the same page and everybody to come out with the right effort," Brown said.

"That's 85% of the battle right there. We come out, we play hard, and then we're on the same page and the rest will take care of itself. We got enough talent in the locker room to beat teams.

"But if we're not on the same page, and we're not playing hard, those are when we get ourselves in trouble. So making sure, before the game at film and shootaround, talking to everybody, touching everybody, letting everybody know that 'Hey, we're not here to play around.'

"We didn't come to Cleveland for the weather, so let's go.

"It's the playoffs. Anything can happen, especially if you come out flat. We've got to do a better job of that, we can't think like this series is going to go like last series.

"We've got to come out and have the same defensive effort going into Game 4 and that's just the urgency we need to have."

Donovan Mitchell starred for Cleveland, scoring 33 points, but was forced off late in the game due to a knee injury, and despite showing signs of a comeback, they could not find any answers in the fourth quarter.

"I just think we didn't hit the same shots we did [in Game 2]," Mitchell said.

"For us, just being able to finish. We missed a lot of shots at the rim, myself included, missed a lot of shots that I think we just got to make. And also, we didn't really shoot that great from 3, but not a bad per cent, but we didn't shoot that well.

"So I think those are different things, and we got to get our looks and take them, because if we don't, we're driving back into the crowd, and they want us to. So being able to take our shots when they're open."

Jaylen Brown hailed the growth of "aggressive" Derrick White, who continued his impressive postseason form in the Boston Celtics' victory over the Cleveland Cavaliers.

The pair scored a combined 57 points as the Celtics prevailed 120-95 in Game 1 of their Eastern Conference semi-finals series at TD Garden.

White notched up seven three-pointers - going four-for-six in the third quarter - as he became only the fifth player in NBA history to make 20 or more over a three-game span in the postseason, after Stephen Curry, Klay Thompson, Jamal Murray and Damian Lillard.

And Brown, who was 12-for-18 shooting to go with six rebounds, two assists and just one turnover, paid tribute to his team-mate as the Celtics improved to 5-1 in the playoffs.

"Derrick has grown," Brown said. "He's a new version that we haven't seen before.

"He's put the work in, his body has developed a little bit, he's got some more playoff experience. He's being aggressive, and we urge him to do that more and more down the line."

Asked if he felt like he was in a rhythm, White said: "I'd say so. It feels good. I just want to help us win."

Meanwhile, Donovan Mitchell's haul of 33 points and six assists proved academic for the Cavaliers, who suffered their fourth successive road defeat in the postseason.

J.B. Bickerstaff, whose side came through an epic seven-game series against Orlando Magic in the opening round on Sunday, saluted the efforts of his players.

"There's a lot of areas we can improve on," he said. "I thought the guys came out with the right intent and the right effort. Facing a team like Boston, I think it's good to be able to play them.

"You're not used to the speed, the spacing, the shooting and all those things until you get up against them - especially coming from a series we just came from that was more of a half-court slugfest, where they play with more tempo and more space. We'll learn from it, and we'll be better."

Kristaps Porzingis suggested Thursday's defeat to the New York Knicks could be just what the Boston Celtics needed ahead of the playoffs.

The Celtics went down 118-109 to the Knicks, as New York hunt down the No.2 seed in the Eastern Conference.

Boston have long since had their playoff berth secured, but have now lost their last two games.

Porzingis, though, is taking the positives.

"It stings to have this loss, but maybe we need this before heading into the postseason with a killer mentality," Porzingis said.

"It's not who we are. This is not the team our fans love. That wasn't on display.

"You best believe we'll show up when we have to. We know what the goal is and make no mistake about it."

Jaylen Brown chipped in with 15 points for the Celtics, and like Porzingis, recognises Boston have not been up to scratch as of late.

"We got out-toughed the last two games and haven't played to our standard," Brown said.

"The game has shifted and it's going to shift even more in the playoffs."

Jalen Brunson led the Knicks with 39 points, and New York are now just one game behind the Milwaukee Bucks in the race for the No.2 seed.

"We made shots and made the right plays," Brunson said.

"Obviously, we know they're the top dog in the East. Whenever you play against them, it's always a good measuring stick to see where you're at.

"We played pretty well, but we know what they’re capable of doing. We just had their number tonight."